GSM 高级网络优化工程师面试总结

目录

目录

 

                                                                                                                                                      

 

 

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 1  

LAC

 

     规划原则；

 

                                                                                                                                 

 

 

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 2  

频点规划原则

 

                                                                                                                                     

 

 

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 3  

掉话率如何优化

 

                                                                                                                                 

 

 

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 3  

寻呼成功率如何优化

 

                                                                                                                         

 

 

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 4  

造成掉话的原因有哪些

 

                                                                                                                     

 

 

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 4  

切换分哪几种

 

                                                                                                                                     

 

 

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 5  

切换执行的顺序

 

                                                                                                                                 

 

 

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 6  

搬迁前评估要收集哪些信息

 

                                                                                                             

 

 

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 6  

单站开通后，网优侧要做哪些工作

 

                                                                                                

 

 

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 7  

信号波动有哪些原因

 

                                                                                                                         

 

 

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 7  

错误指示掉话要改哪些参数

 

                                                                                                             

 

 

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 8  

干扰切换和质量差切换的区别

 

                                                                                                        

 

 

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 8  

基带跳频和射频跳频的区别

 

                                                                                                             

 

 

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 8  

怎样判断是网内干扰还是网外干扰，网外干扰如何定位和排除

 

                                               

 

 

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 9  

双频网（

 

 900/1800

 

 ）之间的切换属于什么切换，有哪些相关参数

 

                                            

 

 

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 9  

天线的分类和选型的原则，电器指标，高速公路选择天线类型

 

                                               

 

 

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 9  

CQT

 

     测试选址原则；

 

                                                                                                                      

 

 

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 10

   

切换成功率很低最可能原因；

 

                                                                                                      

 

 

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 10

   

寻呼成功率相关参数

 

                                                                                                                       

 

 

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 10

   

T200

 

     含义

 

                                                                                                                                           

 

 

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 11

   

怎样检查上行干扰；

 

                                                                                                                       

 

 

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 11

   

16bit

 

     排序

 

                                                                                                                                           

 

 

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 11

   

上下行不平衡怎么看出来，有哪些原因；

 

                                                                                  

 

 

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 11

   

乒乓切换怎样导致掉话

 

                                                                                                                   

 

 

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 11

   

下行覆盖差怎么解决

 

                                                                                                                       

 

 

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 11

   

驻波比理想情况下是多少

 

                                                                                                               

 

 

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 12

   

射频跳频概念，跳频增益，什么情况下跳频增益最大，跳频好处，跳频增益最大多少；
                                                                                                                                                           

 

 

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 12

   

上下行不平衡的概念；

 

                                                                                                                   

 

 

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 12

   

T3103a

 

 ，

   T3103b

 

 ，

   T3103c

 

     计数器的意义；

 

                                                                                 

 

 

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 12

   

呼叫建立流程；

 

                                                                                                                               

 

 

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 13

   

切换流程；

 

                                                                                                                                        

 

 

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 14

   

同步切换和异步切换区别；

 

                                                                                                           

 

 

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 14

   

搬迁后网络覆盖下降，有哪些原因？

 

                                                                                          

 

 

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 14

   

T3212

 

     作用？何时重新计时？

 

                                                                                                       

 

 

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 14

   

影响覆盖的参数有哪些？如何调整这些参数？

 

                                                                          

 

 

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 15

   

基站时钟有几种状态？

 

                                                                                                                   

 

 

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 15